Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 87 ones = _____
- 9 tens = _____
- 3 tens 2 ones = _____
- 1 tens 10 ones = _____
(a)
87 ones
= 87 x 1
= 87
(b)
9 tens
= 9 x 10
= 90
(c)
3 tens 2 ones
= 3 x 10 + 2 x 1
= 30 + 2
= 32
(d)
1 tens 10 ones
= 1 x 10 + 10 x 1
= 10 + 10
= 20
Answer(s): 87, 90, 32, 20